Ronstan Halyard Shackle - 7.9mm (5/16") Pin

The Ronstan Halyard Shackle with 7.9mm (5/16") pin is a marine-grade rigging component engineered for tactical operations, climbing systems, and load-bearing applications where reliability is non-negotiable. Originally designed for professional sailing and maritime use, this shackle has proven itself across law enforcement rappelling, military kit assembly, and emergency response rigging operations. The compact form factor and corrosion-resistant construction make it ideal for operators who require equipment that functions flawlessly in austere environments—from urban SWAT deployments to wilderness search and rescue missions.

Built to exacting Ronstan standards, this halyard shackle features a forged stainless steel or anodized aluminum construction that resists corrosion and salt-water degradation—critical for equipment exposed to moisture, salt spray, or harsh field conditions. The 7.9mm (5/16") pin diameter provides a secure connection point for rope, carabiners, and tactical webbing while maintaining a low profile that won't snag on gear or clothing during operations. The shackle's design distributes load forces evenly, reducing stress concentration and extending service life across repeated deployment cycles. Its compact 2 x 1 x 3 inch dimensions and 0.2 lb weight ensure minimal impact on load-bearing calculations while delivering rated strength that meets or exceeds professional rigging standards.

Tactical professionals, climbing instructors, and rescue teams benefit most from this shackle's proven durability in high-stress scenarios where equipment failure is not an option. It pairs seamlessly with standard 5/16" diameter rope, tactical slings, and professional rigging hardware—making it an essential component for rappel systems, load-bearing anchors, and emergency evacuation setups. Installation is straightforward: thread the pin through aligned webbing or rope loops and secure the keeper pin to prevent rotation or accidental release. Whether integrated into a custom tactical harness, used as a modular connection point in climbing systems, or deployed as a field-expedient load-bearing component, the Ronstan Halyard Shackle delivers the precision and reliability operators depend on when lives are at stake.